CVE-2026-18922— 389-ds-base 权限提升漏洞
一分钟漏洞结论
影响对象
Red Hat Red Hat Directory Server 11.7 E4S for RHEL 8
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
在 389 Directory Server 中发现了一个漏洞。 在 SASL PLAIN 认证过程中，来自之前一次失败绑定尝试的过期身份标识，会通过 Cyrus SASL 辅助属性保留在连接中，并可能在随后一次不相关的成功绑定中生效，无论该次绑定是通过哪种 SASL 机制完成的。 攻击者可以发送一个使用 账户但密码错误的 SASL PLAIN 绑定，然后在同一连接上完成一个 SASL ANONYMOUS 绑定，从而使得服务器在没有任何有效凭据的情况下，仍会授予 Directory Manager 权限。此外，还可
影响版本矩阵 8
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Red Hat | Red Hat Directory Server 11 | 全部 |
affected |
| Red Hat | Red Hat Directory Server 12 | 全部 |
affected |
| Red Hat | Red Hat Directory Server 13 | 全部 |
unaffected |
| Red Hat | Red Hat Enterprise Linux 10 | 全部 |
affected |
| Red Hat | Red Hat Enterprise Linux 6 | 全部 |
affected |
| Red Hat | Red Hat Enterprise Linux 7 | 全部 |
affected |
| Red Hat | Red Hat Enterprise Linux 8 | 全部 |
affected |
| Red Hat | Red Hat Enterprise Linux 9 | 全部 |
affected |
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一、 漏洞 CVE-2026-18922 基础信息
漏洞信息
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Vulnerability Title
389-ds-base: 389-ds-base: sasl plain authentication allows privilege escalation to directory manager via stale identity in cyrus sasl auxiliary property
来源: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in 389 Directory Server. During SASL PLAIN authentication, a stale identity carried in a Cyrus SASL auxiliary property from a prior failed bind attempt can be installed on a connection following a subsequent, unrelated successful bind, regardless of which SASL mechanism completes that second bind. An attacker can send a SASL PLAIN bind as cn=Directory Manager with an incorrect password, then complete a SASL ANONYMOUS bind on the same connection, causing the server to grant Directory Manager authority without any valid credentials. A variant using a valid low-privileged account's own successful bind instead of an anonymous one is also possible.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| Red Hat | Red Hat Directory Server 11.7 E4S for RHEL 8 | 8080020260903102346.f969626e ~ * |
cpe:/a:redhat:directory_server_e4s:11.7::el8
|
|
| Red Hat | Red Hat Directory Server 11.9 for RHEL 8 | 8100020260904171440.37ed7c03 ~ * |
cpe:/a:redhat:directory_server:11.9::el8
|
|
| Red Hat | Red Hat Directory Server 12.2 E4S for RHEL 9 | 9020020260903155914.1674d574 ~ * |
cpe:/a:redhat:directory_server_e4s:12.2::el9
|
|
| Red Hat | Red Hat Directory Server 12.4 E4S for RHEL 9 | 9040020260903102623.1674d574 ~ * |
cpe:/a:redhat:directory_server_e4s:12.4::el9
|
|
| Red Hat | Red Hat Enterprise Linux 10 | 0:3.2.0-10.el10_2 ~ * |
cpe:/o:redhat:enterprise_linux:10.2
|
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | 0:3.0.6-21.el10_0 ~ * |
cpe:/o:redhat:enterprise_linux_eus:10.0
|
|
| Red Hat | Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION | 0:1.2.11.15-97.el6_10.1 ~ * |
cpe:/o:redhat:rhel_els:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | 0:1.3.11.1-15.el7_9 ~ * |
cpe:/o:redhat:rhel_els:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 | 8100020260904155442.25e700aa ~ * |
cpe:/a:redhat:enterprise_linux:8::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | 8040020260901171549.96015a92 ~ * |
cpe:/a:redhat:rhel_aus:8.4::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | 8040020260901171549.96015a92 ~ * |
cpe:/a:redhat:rhel_aus:8.4::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | 8060020260901145727.824efc52 ~ * |
cpe:/a:redhat:rhel_aus:8.6::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | 8060020260901145727.824efc52 ~ * |
cpe:/a:redhat:rhel_aus:8.6::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | 8080020260831180218.6dbb3803 ~ * |
cpe:/a:redhat:rhel_e4s:8.8::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | 8080020260831180218.6dbb3803 ~ * |
cpe:/a:redhat:rhel_e4s:8.8::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9 | 0:2.8.0-10.el9_8 ~ * |
cpe:/a:redhat:enterprise_linux:9::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | 0:2.2.4-22.el9_2 ~ * |
cpe:/a:redhat:rhel_e4s:9.2::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | 0:2.4.5-29.el9_4 ~ * |
cpe:/a:redhat:rhel_e4s:9.4::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | 0:2.6.1-24.el9_6 ~ * |
cpe:/a:redhat:rhel_eus:9.6::appstream
|
|
| Red Hat | Red Hat Directory Server 12 | - |
cpe:/a:redhat:directory_server:12
|
|
| Red Hat | Red Hat Directory Server 13 | - |
cpe:/a:redhat:directory_server:13
|
|
二、漏洞 CVE-2026-18922 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-18922 厂商安全公告 (2)
CVE-2026-18922 其他参考 (16)
同批安全公告 · Red Hat · 2026-09-07 · 共 10 条
| CVE-2026-76578 | 9.8 CRITICAL | FreeIPA 未认证LDAP客户端获取管理员凭据漏洞 |
| CVE-2026-86404 | 8.8 HIGH | Red Hat EAP 7.0 Artemis 默认反序列化漏洞 |
| CVE-2026-19843 | 8.4 HIGH | 389-ds-base 389控制台LDAP编辑器命令注入漏洞 |
| CVE-2026-79678 | 8.1 HIGH | FreeIPA idm: idp-add 未授权代码执行与拒绝服务 |
| CVE-2026-18453 | 7.5 HIGH | 389-ds-base 预认证空指针解引用漏洞 |
| CVE-2026-18355 | 7.5 HIGH | 389-ds-base: sasl_io_start_packet 堆缓冲区溢出漏洞 |
| CVE-2026-76560 | 7.5 HIGH | 389-ds 匿名LDAP客户端空DN绕过ACL绑定检查 |
| CVE-2026-86332 | 6.5 MEDIUM | ODH Dashboard: nim凭据密钥任意认证用户可读漏洞 |
| CVE-2026-86469 | 5.3 MEDIUM | GLib2 2.74.0 符号链接竞争条件漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-18922
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